Tunnel drainage blind pipe unblocking device and method

Abstract

The application discloses a tunnel drainage blind pipe blockage cleaning device and method, relates to the technical field of pipeline cleaning equipment, and comprises a moving assembly, a clamping assembly and a PDC drill bit assembly. The moving assembly comprises a base shell with a roller one and a driving motor thereof, and the top of the base shell is provided with a stand one and a stand two. The top of the stand one and the stand two is connected with a top base with a roller two through a spring one and a guide rod, and the top base is provided with a camera. The PDC drill bit assembly comprises a center column arranged on the stand two, a drill bit shell, a rotating motor and a drill bit cutter, and a high-pressure water pipe is arranged in the center column. The clamping assembly comprises an electric push rod, a supporting seat, a supporting plate, a fixing rod and an air bag. The device is self-adaptively moved and visually positioned in the blind pipe, the rotating drill bit cutter and the high-pressure water flow are used for removing the blockage, the electric push rod drives the supporting plate to be expanded, the fixing rod is inserted, and the air bag is inflated to realize multiple stable supports, so that the tunnel drainage blind pipe blockage cleaning operation is efficiently, safely and completely completed.

Description

Technical Field

[0001] This invention relates to the field of pipeline cleaning equipment technology, and in particular to a device and method for unclogging blind pipes in tunnel drainage systems. Background Technology

[0002] The unobstructed flow of tunnel drainage pipes is crucial for ensuring the smooth progress of tunnel construction and the safety of subsequent operations. However, during construction, cement particles carried by the segregation water from concrete can easily accumulate in the pipes. In addition, debris such as sawdust, plastic fragments, and gravel can easily fall in, causing stubborn blockages and affecting drainage function. Traditional methods of clearing blockages mainly rely on manual labor using simple tools such as long poles and hooks, which is inefficient, time-consuming, has limited working space, and poses safety risks such as personnel being vulnerable to collisions with other construction workers when near the pipes. Existing mechanical equipment, such as high-pressure water guns, is not effective at removing firmly bonded deposits. Therefore, it is particularly urgent to develop a specialized device suitable for the construction period that can efficiently, thoroughly, and safely clean tunnel drainage pipes. Summary of the Invention

[0003] This application provides a device and method for clearing blockages in tunnel drainage blind pipes, which solves the technical problems of low efficiency, poor safety, and incomplete removal of stubborn blockages in the prior art. By integrating adaptive walking, visual positioning, mechanical drilling and high-pressure water jet cleaning, and adjustable multiple anchoring of the pipe wall, it achieves automated, efficient, safe, and thorough technical effects.

[0004] This application provides a device and method for clearing blockages in tunnel drainage blind pipes, including a moving component, a positioning component, and a PDC drill bit assembly; the moving component includes a base shell and rollers rotatably disposed on the four sides of the base shell, a drive motor for driving the rollers to rotate is installed inside the base shell, and a first upright and a second upright are respectively provided at the top two ends of the base shell, and the PDC drill bit assembly is disposed on one end face of the second upright; the positioning component is disposed between the first upright and the second upright.

[0005] The top of the first and second uprights is provided with a top plate, and the top plate also includes a top seat with rollers on four sides, two pairs of springs, and two pairs of guide rods; one end of each pair of springs is fixed to the top of the top plate, and the other end is fixed to the bottom of the top seat; the two pairs of guide rods are fixed to the bottom of the top seat, and their positions correspond one-to-one with the springs; a limiting sleeve with an upward opening is also fixed between the first and second uprights, and a high-pressure water pipe is installed inside the limiting sleeve, with one end of the high-pressure water pipe passing through the second upright and the central column in sequence; a camera is provided at the end of the top seat facing the PDC drill bit assembly.

[0006] The PDC drill bit assembly includes a central column fixed to one end face of the second support frame, a drill bit housing, and a rotary motor. The rotary motor is located on one end face of the second support frame and is close to the central column. An external gear is fixed to the output shaft of the rotary motor. The drill bit housing is a hollow structure with an opening at one end, and one end of the drill bit housing is rotatably connected to one end of the central column via a bearing. An internal ring gear is fixed inside the hollow structure of the drill bit housing, and the external gear on the output shaft of the rotary motor meshes with the internal ring gear of the drill bit housing. Multiple drill bits are circumferentially fixed to one end face of the drill bit housing.

[0007] The positioning assembly includes an electric push rod disposed on one end face of the upright, connecting plates symmetrically disposed on both sides of the electric push rod, two support seats, a support plate, and a connecting part; one end of each of the two support seats is fixedly connected to a support plate, and the support seats are disposed on the electric push rod through the connecting part; the connecting part includes multiple pairs of first linkage rods, a pair of second linkage rods, and a connecting seat; the connecting seat is fixedly connected to the output shaft of the electric push rod; one end of each pair of second linkage rods is symmetrically hinged to both ends of the connecting seat; one end of each pair of first linkage rods is symmetrically hinged to one end of the connecting plate; the other ends of each pair of second linkage rods and multiple pairs of first linkage rods are respectively hinged to the other end of the corresponding support plate.

[0008] A miniature dual-purpose air pump is fixedly connected to the support base; an air pipe is symmetrically fixed to the upper and lower ends of the connection surface between the support plate and the support base, and the two air pipes are interconnected; one of the two air pipes is connected to the miniature dual-purpose air pump.

[0009] Multiple sets of fixing rods are slidably connected to the other end face of the support plate; a baffle is fixed to the outer arc surface of the fixing rod, a second spring is fixed to one end face of the baffle, and the other end of the second spring is fixed to the other end face of the support plate.

[0010] The outer arc surface of the fixed rod is also fixedly connected to an annular airbag, which is connected to the first airbag through the second air tube passing through the baffle.

[0011] This application also provides a method for clearing blockages in a tunnel drainage blind pipe, S1: The clearing device is placed into the blocked drainage blind pipe, and under the action of spring one and guide rod, roller one and roller two are kept in contact with the inner wall of the drainage blind pipe, so that the device adapts to the pipe diameter and moves. S2. Move the device by driving the motor and use a camera to observe the condition inside the pipe to locate the blockage. S3. Start the rotating motor to drive the external gear to rotate. The external gear drives the inner ring gear in the drill bit housing, causing the drill bit housing and the circumferential drill bit to rotate together to cut the blockage. At the same time, high-pressure water is delivered to the drill bit through the high-pressure water pipe to assist cutting and discharge drill cuttings and wastewater through the annular gap between the drill bit and the pipe wall. S4. During the cutting process, start the electric push rod and drive the support plate to open outward through the connecting part until it contacts the inner wall of the drainage blind pipe, so that the fixing rod is inserted into the fiber gap of the pipe wall. S5. Start the miniature dual-purpose air pump to deliver gas into the first air tube. The gas enters the air bladder on the fixed rod through the second air tube, causing the air bladder to expand and further fill the gaps in the tube wall fibers, thus achieving stable support for the device. S6. After clearing the blockage in the current section, retract the locking component and drive the device to move to the next blocked section. Repeat steps S3 to S5 until the entire blind pipe is cleared.

[0012] Beneficial Effects: The device, through its movable rollers (one on the moving component, two on the top, one spring, and guide rod structure), adapts to drainage blind pipes of different diameters and moves smoothly. A camera allows for real-time observation of the pipe's internal condition, accurately locating blockage points. The PDC drill bit assembly, driven by a rotating motor, rotates the drill bit at high speed. Combined with the high-pressure water flow provided by the high-pressure water pipe within the central column, it efficiently cuts and removes various blockages such as concrete deposits, wood chips, and gravel, ensuring thorough cleaning. The positioning assembly, driven by an electric push rod, expands the support plate, allowing the fixing rod to insert into the fiber gaps in the pipe wall. A miniature dual-purpose air pump inflates the air bladder to fill the gaps, providing multiple stable supports during operation and greatly improving the stability and efficiency of the drilling process. The entire device achieves automated, efficient, and safe clearing of drainage blind pipes in tunnels. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of a tunnel drainage blind pipe unblocking device and method according to the present invention; Figure 2 This is a side view of the tunnel drainage blind pipe clearing device and method of the present invention; Figure 3 This is a schematic diagram of the drill bit shell structure of a tunnel drainage blind pipe unblocking device and method according to the present invention; Figure 4 This is a schematic diagram showing the position of the electric push rod in the tunnel drainage blind pipe clearing device and method of the present invention. Figure 5 This is an enlarged view of position A of the tunnel drainage blind pipe clearing device and method of the present invention.

[0014] 100. Base shell; 101. Roller 1; 102. Stand 1; 103. Stand 2; 104. Camera; 110. Top plate; 111. Top seat; 112. Roller 2; 113. Spring 1; 114. Guide rod; 115. Limiting sleeve; 120. High-pressure water pipe; 200. PDC drill bit assembly; 210. Center column; 220. Drill bit shell; 221. Inner ring gear; 222. Drill bit cutter; 230. Rotary motor; 231. External gear; 300. Locking assembly; 310. Electric push rod; 311. Connecting plate; 312. Connecting seat; 313. Linking rod one; 320. Support seat; 321. Linking rod two; 322. Support plate; 330. Miniature dual-purpose air pump; 331. Air tube one; 340. Fixing rod; 341. Baffle; 242. Spring two; 343. Airbag; 344. Air tube two. Detailed Implementation

[0015] To facilitate understanding of the present invention, a more complete description of this application will be given below with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of the present invention.

[0016] It should be noted that the terms "vertical," "horizontal," "up," "down," "left," "right," and similar expressions used in this article are for illustrative purposes only and do not represent the only possible implementation.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0018] Example 1: As Figures 1 to 5 As shown, this application discloses a device and method for clearing blockages in tunnel drainage blind pipes, including a moving component, a positioning component 300, and a PDC drill bit assembly 200. The moving component includes a base shell 100 and rollers 101 rotatably disposed on the four sides of the base shell 100. A drive motor for driving the rollers to rotate is installed inside the base shell 100. A first support frame 102 and a second support frame 103 are respectively provided at the top two ends of the base shell 100. The PDC drill bit assembly 200 is disposed on one end face of the second support frame 103. The positioning component 300 is disposed between the first support frame 102 and the second support frame 103.

[0019] The top of the first support frame 102 and the second support frame 103 is provided with a top plate 110. The top plate 110 also includes a top seat 111 with rollers 112 on each of the four sides, two pairs of springs 113, and two pairs of guide rods 114. One end of each pair of springs 113 is fixed to the top of the top plate 110, and the other end is fixed to the bottom of the top seat 111. The two pairs of guide rods 114 are fixed to the bottom of the top seat 111, and their positions correspond one-to-one with the springs 113. A limiting sleeve 115 with an upward opening is also fixed between the first support frame 102 and the second support frame 103. A high-pressure water pipe 120 is installed inside the limiting sleeve 115. One end of the high-pressure water pipe 120 passes through the second support frame 103 and the central column 210 in sequence. A camera 104 is provided at the end of the top seat 111 facing the PDC drill bit assembly 200.

[0020] The PDC drill bit assembly 200 includes a central column 210 fixed to one end face of the support frame 2 103, a drill bit housing 220, and a rotary motor 230. The rotary motor 230 is located on one end face of the support frame 2 103 and is close to the central column 210. An external gear 231 is fixedly connected to the output shaft of the rotary motor 230. The drill bit housing 220 is a hollow structure with an opening at one end, and one end of the drill bit housing 220 is rotatably connected to one end of the central column 210 via a bearing. An internal ring gear 221 is fixedly connected inside the hollow structure of the drill bit housing 220, and the external gear 231 of the output shaft of the rotary motor 230 meshes with the internal ring gear 221 of the drill bit housing 220. A plurality of drill bits 222 are circumferentially fixed to one end face of the drill bit housing 220.

[0021] The positioning assembly 300 includes an electric push rod 310 disposed on one end face of the support frame 102, connecting plates 311 symmetrically disposed on both sides of the electric push rod 310, two support seats 320, a support plate 322, and a connecting part; one end of each of the two support seats 320 is fixedly connected to a support plate 322, and the support seats 320 are disposed on the electric push rod 310 through the connecting part; the connecting part includes multiple pairs of first linkage rods 313, a pair of second linkage rods 321, and a connecting seat 312; the connecting seat 312 is fixedly connected to the output shaft of the electric push rod 310; one end of each pair of second linkage rods 321 is symmetrically hinged to both ends of the connecting seat 312; one end of each pair of first linkage rods 313 is symmetrically hinged to one end of the connecting plate 311; the other ends of each pair of second linkage rods 321 and multiple pairs of first linkage rods 313 are respectively hinged to the other end of the corresponding support plate 322.

[0022] A miniature dual-purpose air pump 330 is fixedly connected to the support base 320; air pipes 331 are symmetrically fixed to the upper and lower ends of the connection surface between the support plate 322 and the support base 320, and the two air pipes 331 are interconnected; one of the two air pipes 331 is connected to the miniature dual-purpose air pump 330.

[0023] Multiple sets of fixing rods 340 are slidably connected to the other end face of the support plate 322; a baffle 341 is fixedly connected to the outer arc surface of the fixing rod 340, a spring 342 is fixedly connected to one end face of the baffle 341, and the other end of the spring 342 is fixedly connected to the other end face of the support plate 322.

[0024] The outer arc surface of the fixing rod 340 is also fixedly connected to an annular airbag 343, which is connected to the first airbag 331 through the second air pipe 344 through the baffle 341.

[0025] This application also provides a method for clearing blockages in a tunnel drainage blind pipe. S1, the clearing device is placed into the blocked drainage blind pipe. Under the action of spring 113 and guide rod 114, roller 101 and roller 212 are kept in contact with the inner wall of the drainage blind pipe, so that the device adapts to the pipe diameter and moves. S2. Move the device by driving the motor and observe the condition inside the pipe using the camera 104 to locate the blockage. S3. Start the rotating motor 230, which drives the external gear 231 to rotate. The external gear 231 drives the inner ring gear 221 inside the drill bit housing 220, causing the drill bit housing 220 and the circumferential drill bit 222 to rotate together, cutting the blockage. At the same time, high-pressure water is delivered to the drill bit through the high-pressure water pipe 120 to assist cutting and discharge drill cuttings and wastewater through the annular gap between the drill bit 222 and the pipe wall. S4. During the cutting process, start the electric push rod 310, drive the support plate 322 to expand outward through the connecting part until it contacts the inner wall of the drainage blind pipe, so that the fixing rod 340 is inserted into the fiber gap of the pipe wall. S5. Start the micro dual-purpose air pump 330 to deliver gas into the first air tube 331. The gas enters the air bag 343 on the fixed rod 340 through the second air tube 344, causing the air bag 343 to expand and further fill the fiber gaps in the tube wall, thus achieving stable support for the device. S6. After clearing the blockage in the current section, retract the locking component 300 and drive the device to move to the next blocked section. Repeat steps S3 to S5 until the entire blind pipe is cleared.

[0026] Specific implementation: The device is placed into the blocked drainage blind pipe. Under the action of the spring and guide rod 114, roller 101 and roller 212 are kept in real-time contact with the inner surface of the drainage blind pipe, so that the device can adapt to the diameter of the drainage blind pipe. By controlling the movement of the device and observing the camera 104, the device reaches the blocked position in the drainage blind pipe. The rotating motor 230 is started to drive the external gear 231 to rotate. The external gear 231 drives the inner ring gear 221, the drill bit housing 220 and the drill bit 222 to rotate together. The drill bit 222 scrapes away the wood chips, plastic fragments, gravel and other debris in the drainage blind pipe. High-pressure water flow is achieved through the internal high-pressure water pipe 120 to assist in cutting the debris in the drainage blind pipe. At the same time, the wastewater can carry the drill cuttings through the annular gap between the drill bit 222 and the drainage blind pipe and be discharged.

[0027] During the process of the drill bit 222 cutting debris inside the drainage blind pipe, in order to ensure the stability of cutting, the electric push rod 310 is activated, which causes the support plate 322 hinged to it to be pushed outward until it contacts the wall of the drainage blind pipe. At this time, the fixing rod 340 on the support plate 322 is inserted into the gaps in the fibers of the drainage blind pipe. In order to further improve the stability of cutting, the miniature dual-purpose air pump 330 is activated to supply air into the air pipe 331. The gas then flows from the air pipe 331 to each air bag 343, causing it to expand and fill the gaps in the fibers of the corresponding drainage blind pipe, thereby further improving the stability of cutting.

[0028] Beneficial effects: Through the structure of the moving component roller 101, the top roller 112, the spring 113, and the guide rod 114, the device can adapt to drainage blind pipes of different diameters and move smoothly.

[0029] Camera 104 allows for real-time observation of the pipe's internal condition and precise location of blockages.

[0030] The PDC drill bit assembly 200 drives the drill bit 222 to rotate at high speed via the rotating motor 230. Combined with the high-pressure water pipe 120 in the center column 210, it provides high-pressure water flow, which can efficiently cut and remove various blockages such as concrete deposits, wood chips, and gravel, and thoroughly clear blockages.

[0031] The positioning component 300 drives the support plate 322 to open via the electric push rod 310, allowing the fixing rod 340 to be inserted into the fiber gap of the pipe wall. The micro dual-purpose air pump 330 inflates the air bag 343 to fill the gap, achieving multiple stable supports for the device during operation, which greatly improves the stability and efficiency of the drilling process. The whole device realizes the automated, efficient and safe unblocking of tunnel drainage blind pipes.

[0032] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device and method for clearing blockages in tunnel drainage blind pipes, characterized in that, It includes a moving component, a positioning component (300), and a PDC drill bit assembly (200); the moving component includes a base shell (100) and rollers (101) rotatably disposed on the four sides of the base shell (100), the base shell (100) is equipped with a drive motor for driving the rollers to rotate, and the top two ends of the base shell (100) are respectively provided with a first stand (102) and a second stand (103); the PDC drill bit assembly (200) is disposed on one end face of the second stand (103); the positioning component (300) is disposed between the first stand (102) and the second stand (103).

2. The tunnel drainage blind pipe unblocking device and method according to claim 1, characterized in that, The top of the first upright (102) and the second upright (103) are provided with a top plate (110). The top plate (110) also includes a top seat (111) with rollers (112) on each of the four sides, two pairs of springs (113) and two pairs of guide rods (114). One end of each pair of springs (113) is fixed to the top of the top plate (110), and the other end is fixed to the bottom of the top seat (111). The two pairs of guide rods (114) are fixed to the top seat (111). 1) The bottom is located at a position corresponding to spring one (113); a limiting sleeve (115) with an upward opening is fixed between the first (102) and the second (103) of the support frame, and a high-pressure water pipe (120) is installed inside the limiting sleeve (115). One end of the high-pressure water pipe (120) passes through the second (103) and the central column (210) in sequence; a camera (104) is provided at the end of the top seat (111) facing the PDC drill bit assembly (200).

3. The tunnel drainage blind pipe unblocking device and method according to claim 1, characterized in that, The PDC drill bit assembly (200) includes a central column (210) fixed to one end face of the second stand (103), a drill bit housing (220), and a rotary motor (230); the rotary motor (230) is located on one end face of the second stand (103) and close to the central column (210); an external gear (231) is fixed to the output shaft of the rotary motor (230); the drill bit housing (220) is a hollow structure with an opening at one end, and one end of the drill bit housing (220) is rotatably connected to one end of the central column (210) through a bearing; an internal ring gear (221) is fixed inside the hollow structure of the drill bit housing (220), and the external gear (231) of the output shaft of the rotary motor (230) meshes with the internal ring gear (221) of the drill bit housing (220); a plurality of drill bits (222) are circumferentially fixed to one end face of the drill bit housing (220).

4. The tunnel drainage blind pipe unblocking device and method according to claim 2, characterized in that, The positioning assembly (300) includes an electric push rod (310) disposed on one end face of the support frame (102), connecting plates (311) symmetrically disposed on both sides of the electric push rod (310), two support seats (320), a support plate (322), and a connecting part; one end of each of the two support seats (320) is fixedly connected to the support plate (322), and the support seats (320) are disposed on the electric push rod (310) through the connecting part; the connecting part includes multiple pairs of linkage rods (313) and one pair of linkage rods. Rod 2 (321) and connecting seat (312); the connecting seat (312) is fixed to the output shaft of the electric push rod (310); one end of a pair of connecting rods 2 (321) is symmetrically hinged to both ends of the connecting seat (312); one end of multiple pairs of connecting rods 1 (313) is symmetrically hinged to one end of the connecting plate (311); the other end of a pair of connecting rods 2 (321) and multiple pairs of connecting rods 1 (313) is respectively hinged to the other end of the corresponding support plate (322).

5. The tunnel drainage blind pipe unblocking device and method according to claim 4, characterized in that, A miniature dual-purpose air pump (330) is fixedly connected to the support base (320); air pipes (331) are symmetrically fixed to the upper and lower ends of the connection surface between the support plate (322) and the support base (320), and the two air pipes (331) are interconnected; one of the two air pipes (331) is connected to the miniature dual-purpose air pump (330).

6. The tunnel drainage blind pipe unblocking device and method according to claim 5, characterized in that, The other end face of the support plate (322) is slidably connected to a plurality of fixed rods (340); a baffle (341) is fixedly connected to the outer arc surface of the fixed rod (340), a spring (242) is fixedly connected to one end face of the baffle (341), and the other end of the spring (242) is fixedly connected to the other end face of the support plate (322).

7. The device and method for clearing blockages in a tunnel drainage blind pipe according to claim 6, characterized in that, The outer arc surface of the fixed rod (340) is also fixed with an annular airbag (343), which is connected to the airbag (343) through the baffle via the second air pipe (344).

8. A method for clearing blockages in tunnel drainage blind pipes, characterized in that, S1. Place the unblocking device into the blocked drainage blind pipe. Under the action of spring one (113) and guide rod (114), roller one (101) and roller two (112) are kept in contact with the inner wall of the drainage blind pipe, so that the device adapts to the pipe diameter and moves. S2. Move the device by driving the motor and observe the condition inside the pipe using the camera (104) to locate the blockage position; S3. Start the rotating motor (230) to drive the external gear (231) to rotate. The external gear (231) drives the inner ring gear (221) inside the drill bit housing (220) to rotate together with the drill bit housing (220) and the circumferential drill bit (222) to cut the blockage. At the same time, high-pressure water is delivered to the drill bit through the high-pressure water pipe (120) to assist cutting and discharge drill cuttings and wastewater through the annular gap between the drill bit (222) and the pipe wall. S4. During the cutting process, start the electric push rod (310) and drive the support plate (322) to open outward through the connecting part until it contacts the inner wall of the drainage blind pipe, so that the fixing rod (340) is inserted into the fiber gap of the pipe wall. S5. Start the micro dual-purpose air pump (330) to deliver gas into the first air tube (331). The gas enters the air bag (343) on the fixed rod (340) through the second air tube (344), causing the air bag (343) to expand and further fill the fiber gaps in the tube wall to achieve stable support of the device. S6. After clearing the blockage in the current section, retract the locking assembly (300) and drive the device to move to the next blocked section. Repeat steps S3 to S5 until the entire blind pipe is cleared.

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